US 11,945,891 B2
Speaker having an adhesive composition
Hideki Hayashi, Shibukawa (JP); Yoshitsugu Goto, Tokyo (JP); and Chiaki Takano, Shibukawa (JP)
Assigned to DENKA COMPANY LIMITED, Tokyo (JP)
Appl. No. 16/628,899
Filed by DENKA COMPANY LIMITED, Tokyo (JP)
PCT Filed Sep. 19, 2018, PCT No. PCT/JP2018/034680
§ 371(c)(1), (2) Date Jan. 6, 2020,
PCT Pub. No. WO2019/059239, PCT Pub. Date Mar. 28, 2019.
Claims priority of application No. 2017-179741 (JP), filed on Sep. 20, 2017.
Prior Publication US 2020/0231726 A1, Jul. 23, 2020
Int. Cl. C08F 220/20 (2006.01); C08F 220/14 (2006.01); C08F 222/10 (2006.01); C08K 5/18 (2006.01); C09J 4/06 (2006.01); C09J 11/06 (2006.01); H04R 1/00 (2006.01); C08K 5/098 (2006.01)
CPC C08F 220/20 (2013.01) [C08F 220/14 (2013.01); C08F 222/102 (2020.02); C08K 5/18 (2013.01); C09J 4/06 (2013.01); C09J 11/06 (2013.01); H04R 1/00 (2013.01); C08K 5/098 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A speaker, comprising:
a corn;
a voice coil;
a damper material; and
an adhesive composition bonded on the corn, the voice coil and the damper material;
wherein the adhesive composition excludes a (meth)acrylic acid, and the adhesive composition comprises the following components (1) to (5):
(1) a polymerizable vinyl monomer containing 10 to 70 parts by mass of (1-1), 10 to 60 parts by mass of (1-2), and 10 to 60 parts by mass of (1-3) based on 100 parts by mass of (1) the polymerizable vinyl monomer, wherein
(1-1) is a (meth)acrylic monomer represented by the formula (A)
Z—O—R1   Formula (A)
wherein, Z represents a (meth)acryloyl group, and R1 represents unsubstituted alkyl group,
(1-2) is a (meth)acrylic monomer represented by the formula (B)

OG Complex Work Unit Chemistry
wherein, Z and Z′ represent a (meth)acryloyl group, and R2 and R2′ represent an alkylene group; R2 and R2′ may be the same as or different from one another; R3 and R3′ represent a hydrogen atom, or an alkyl group having 1 to 4 carbon atoms; R3 and R3′ may be the same as or different from one another; m+n is in a range of 0 to 40;
(1-3) is a (meth)acrylic monomer that is a (meth)acrylic acid ester of a polyhydric alcohol;
(2) a thermal radical polymerization initiator;
(3) a photo-radical polymerization initiator;
(4) at least one of the group consisting of an aromatic amine compound and a pyridine derivative compound; and
(5) an organic metal salt.